In Vitro Antimicrobial Activity of Ethanolic Extract of Polish Propolis against Biofilm Forming Staphylococcus epidermidis Strains

Table 3

Multivariate analysis of variance by three-way ANOVA of S. epidermidis strains susceptibility to EEPP.

Source of variation	df	Sum of squares	Mean squares	% of variance	𝐹	𝑃
Strain (𝑆)	10	1.97	0.2	0.59	127.64	<0.001
Time (𝑇)	3	3.45	1.51	1.04	744.49	<0.001
Concentration (𝐶)	10	277.57	27.76	83.88	17946.44	<0.001
𝑆×𝑇	30	2.55	0.09	0.77	55.12	<0.001
𝑆×𝐶	100	5.32	0.05	1.61	34.42	<0.001
𝑇×𝐶	30	36.19	1.21	10.94	780.04	<0.001
𝑆×𝑇×𝐶	300	3.11	0.01	0.94	6.70	<0.001